<html>
<head>
    <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>wifi attendance</title>
</head>
<body>
    <p>出错了</p>
    <p>{{ error_message }}</p>
</body>
</html>